Anti-pan methyl Lysine antibody - ChIP Grade (ab7315)

  Western blot - Anti-pan methyl Lysine antibody - ChIP Grade (ab7315)

All lanes : Anti-pan methyl Lysine antibody - ChIP Grade (ab7315) at 1 µg/ml

Lane 1 : Calf Thymus Histone Preparation Nuclear Lysate
Lane 2 : Calf Thymus Histone Preparation Nuclear Lysate with Histone H3 peptide - unmodified (ab7228) at 0.5 µg/ml
Lane 3 : Calf Thymus Histone Preparation Nuclear Lysate with Histone H3 peptide - mono methyl K4 (ab1340) at 0.5 µg/ml
Lane 4 : Calf Thymus Histone Preparation Nuclear Lysate with Histone H3 peptide - di methyl K4 (ab7768) at 0.5 µg/ml
Lane 5 : Calf Thymus Histone Preparation Nuclear Lysate with Histone H3 peptide - tri methyl K4 (ab1342) at 0.5 µg/ml
Lane 6 : Calf Thymus Histone Preparation Nuclear Lysate with Histone H3 peptide - mono methyl K9 (ab1771) at 0.5 µg/ml
Lane 7 : Calf Thymus Histone Preparation Nuclear Lysate with Histone H3 peptide - di methyl K9 (ab1772) at 0.5 µg/ml
Lane 8 : Calf Thymus Histone Preparation Nuclear Lysate with Histone H3 peptide - tri methyl K9 (ab1773) at 0.5 µg/ml
Lane 9 : Calf Thymus Histone Preparation Nuclear Lysate with Histone H3 peptide - mono methyl K27 (ab1780) at 0.5 µg/ml
Lane 10 : Calf Thymus Histone Preparation Nuclear Lysate with Histone H3 peptide - di methyl K27 (ab1781) at 0.5 µg/ml
Lane 11 : Calf Thymus Histone Preparation Nuclear Lysate with Histone H3 peptide - tri methyl K27 (ab1782) at 0.5 µg/ml

Lysates/proteins at 0.5 µg per lane.

Secondary
Goat polyclonal Secondary Antibody to Rabbit IgG - H&L (HRP), pre-adsorbed (ab97080) at 1/5000 dilution
developed using the ECL technique

Performed under reducing conditions.

Predicted band size : 14-17 kDa


Exposure time : 20 minutes

Expected molecular weights: H3 = 17 kDa; H4 = 14 kDa This image shows that the main epitopes recognized by ab7315 are the di methylated lysine residues. This can be seen in lanes 4, 7 and 10 where the activity of the antibody is quenched by the immunizing peptides (ab7768, ab1772, ab1781).

  ChIP - pan methyl Lysine (methyl K pan) antibody - ChIP Grade (ab7315)

 Chromatin was prepared from Hela cells according to the Abcam X-ChIP protocol. Cells were fixed with formaldehyde for 10min. The  ChIP was performed with 25µg of chromatin, 6.5µl of ab7315 (blue), and 20µl of Protein A/G sepharose beads. No antibody was added to the beads control (yellow). The immunoprecipitated DNA was quantified by real time PCR (Taqman approach for active and inactive loci, Sybr green approach for heterochromatic loci). Primers and probes are located in the first kb of the transcribed region.

  Immunoprecipitation - Anti-pan methyl Lysine antibody - ChIP Grade (ab7315)

pan methyl Lysine was immunoprecipitated using 0.5mg Hela whole cell extract, 5µg of it polyclonal to pan methyl Lysine and 50µl of protein G magnetic beads (+). No antibody was added to the control (-).
The antibody was incubated under agitation with Protein G beads for 10min, Hela whole cell extract lysate diluted in RIPA buffer was added to each sample and incubated for a further 10min under agitation.
Proteins were eluted by addition of 40µl SDS loading buffer and incubated for 10min at 70^oC; 10µl of each sample was separated on a SDS PAGE gel, transferred to a nitrocellulose membrane, blocked with 5% BSA and probed with ab7315.
Secondary: Clean blot (HRP conjugate) at 1/1000 dilution.
Band: 17kDa: pan methyl Lysine.

  Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - pan methyl Lysine (methyl K pan) antibody - ChIP Grade (ab7315)

IHC image of pan methyl Lysine (methyl K pan) staining in human breast carcinoma FFPE section, performed on a Bond^TM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab7315, 1µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

  Immunocytochemistry/ Immunofluorescence - Anti-pan methyl Lysine antibody - ChIP Grade (ab7315)

ICC/IF image of ab7315 stained HeLa cells. The cells were 100% methanol fixed (5 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody ab7315 at 5µg/ml overnight at +4°C. The secondary antibody (green) was DyLight® 488 goat anti- rabbit (ab96899) IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.